Does anyone what episode of Friends, the cast was filming during the week of September 11th 2001?

Even though I have no idea of the answer to this question, I am responding to this post in hopes of stimulating some conversation about some of these fine shows! So far in this sitting, I have been alternating between the pages of "Caroline in the City", "Gimme a Break!" and "Mad About You". So far, I have not managed to generate any responses anywhere! The only show that I have any interest in and whose page has been getting any action has been the "Brady Bunch". Let us see if this post can jump-start the situation!

the episode where monica & chandler go on their honeymoon aired after sept 11th thankfully wasn't really in NYC that fateful day. it was filmed in CA @ warner brothers (which I've been by when the show started)

the episode where monica & chandler go on their honeymoon aired after sept 11th thankfully wasn't really in NYC that fateful day. it was filmed in CA @ warner brothers (which I've been by when the show started)
That the second or third one that aired. I want the episode they were filming the week of 9/11/01

the 1 where monica & chandler go on their honeymoon

the 1 where monica & chandler go on their honeymoon
They filmed the Honeymoon episode a few weeks before 9/11. they had to go back and redo a scene. I want to know what episode was being filmed that same week of 9/11 not what aired on TV.